S Block Elements Question 239

Question: When sodium bicarbonate is heated the product obtained is

[Pb. CET 2000; DCE 2004]

Options:

A) Na

B) $ Na_2CO_3 $

C) $ NaCO_3 $

D) $ Na_2(HCO_3) $

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Answer:

Correct Answer: B

Solution:

When sodium bicarbonate $ (NaHCO_3) $ is heated, sodium carbonate, $ CO_2 $ and water are formed. $ 2NaHCO_3\xrightarrow{\Delta }\underset{\text{Sodium carbonate}}{\mathop{Na_2CO_3}}+CO_2\uparrow +H_2O $